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REPAIR
Bearing Housing i % Connecting Rod
WARNING
To reduce the riskof serious bodily injury, including
fluid injection, splashing fluid in the eyes or on the
skin, or injury from moving parts, always follow the
Pressure Relief Procedure Warning
on page 17
before repairing any part of the sprayer. Disconnect
the spark plug cable.
NOTE: Steps 1 to 13 refer to Fig 22-1.
1. Remove the front cover and screws (23,68),
2. Unscrew the suction tube (30) from the pump, hold-
ing
a
wrench on the pump intake valve
(B) to keep the
pump from loosening.
3. Disconnect the pump outlet hose (59) from the dis-
placement pump outlet nipple (87).
4. Use a screwdriver to push aside the retaining spring
(26) at the top of the pump. Push the pin (25) out the
rear.
5. Loosen the jam nut (27) with an adjustable wrench.
Unscrew and remove the displacement pump.
6. Use a hex key wrench
to
remove the four screws (73)
and lockwashers (74) from the bearing housing.
7 . While pulling the connecting rod (22) with one hand,
with a plastic mallet to loosen it from the drive hous-
lightly
tap
the lower rear of the bearing housing (21)
ing (20). Pull the bearing housing and the connecting
rod assembly (22) off the drive housing.
8.
Inspect the crank (A) from excessive wear and re-
place parts as needed.
9. Evenly lubricate the inside of the bronze bearing (C)
in the bearing housing (21) and the inside
of the con-
necting rod link (D) with high quality motor oil. Liber-
ally pack the roller bearing
(E)
in the connecting rod
assembly (22) with bearing grease.
10. Assemble the connecting rod (22) and bearing hous-
ing (21).
11. Clean the mating surfaces of the bearing and drive
housings.
12. Align the connecting rod with the crank
(A)
and care-
fully align the locating pins (C) in the drive housing
(20) with the holes in the bearing housing (21). Push
the bearing housing onto the drive housing
or
tap it
into place with a plastic mallet.
13. Install the screws (73) and lockwashers (74) on the
bearing housing and tighten evenly to 15 in-lb
(1.7 Nm).
27'
I
1 2 5 9
B*
30
Fig 22-1
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